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NEW QUESTION 29
Given the following code:
let x = null;
console.log(typeof x);
What is the output?
- A. "object"
- B. "x"
- C. "undefined"
- D. "null"
Answer: A
NEW QUESTION 30
A developer is required to write a function that calculates the sum of elements in an
array but is getting undefined every time the code is executed. The developer needs to find
what is missing in the code below.
Const sumFunction = arr => {
Return arr.reduce((result, current) => {
//
Result += current;
//
), 10);
);
Which option makes the code work as expected?
- A. Replace line 05 with return result;
- B. Replace line 03 with if(arr.length == 0 ) ( return 0; )
- C. Replace line 04 with result = result +current;
- D. Replace line 02 with return arr.map(( result, current) => (
Answer: A
NEW QUESTION 31
Cloud Kicks has a class to represent item for sale in an online store, as shown below:
A new business requirement comes in that request a clothingitem class, that should have all of the properties and methods of the item class, but will also have properties that are specific top clothes.
Which line of code properly declares the clothingitem class such that it inherits from item?
- A. Class clothing item super item (
- B. Class clothingitem extends item (
- C. Class Clothingitem (
- D. Class clothingitem implements item (
Answer: B
NEW QUESTION 32
Given the code below:
What is logged to the console'
- A. 2 5 1 3 4
- B. 1 2 5 3 4
- C. 1 2 3 4 5
- D. 2 5 3 4 1
Answer: D
NEW QUESTION 33
A developer creates a generic function to log custom messages in the console. To do this, the function below is implemented.
01 function logStatus(status){
02 console./*Answer goes here*/{'Item status is: %s', status};
03 }
Which three console logging methods allow the use of string substitution in line 02?
- A. Error
- B. Log
- C. Assert
- D. Message
- E. Info
Answer: A,B,E
NEW QUESTION 34
......
